/*
 * Copyright (c) 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */
#ifndef NSIG

#define NSIG    32

#define SIGHUP  1       /* hangup */
#define SIGINT  2       /* interrupt */
#define SIGQUIT 3       /* quit */
#define SIGILL  4       /* illegal instruction (not reset when caught) */
#define SIGTRAP 5       /* trace trap (not reset when caught) */
#define SIGIOT  6       /* IOT instruction */
#define SIGABRT SIGIOT  /* compatibility */
#define SIGEMT  7       /* EMT instruction */
#define SIGFPE  8       /* floating point exception */
#define SIGKILL 9       /* kill (cannot be caught or ignored) */
#define SIGBUS  10      /* bus error */
#define SIGSEGV 11      /* segmentation violation */
#define SIGSYS  12      /* bad argument to system call */
#define SIGPIPE 13      /* write on a pipe with no one to read it */
#define SIGALRM 14      /* alarm clock */
#define SIGTERM 15      /* software termination signal from kill */
#define SIGURG  16      /* urgent condition on IO channel */
#define SIGSTOP 17      /* sendable stop signal not from tty */
#define SIGTSTP 18      /* stop signal from tty */
#define SIGCONT 19      /* continue a stopped process */
#define SIGCHLD 20      /* to parent on child stop or exit */
#define SIGCLD  SIGCHLD /* compatibility */
#define SIGTTIN 21      /* to readers pgrp upon background tty read */
#define SIGTTOU 22      /* like TTIN for output if (tp->t_local&LTOSTOP) */
#define SIGIO   23      /* input/output possible signal */
#define SIGXCPU 24      /* exceeded CPU time limit */
#define SIGXFSZ 25      /* exceeded file size limit */
#define SIGVTALRM 26    /* virtual time alarm */
#define SIGPROF 27      /* profiling time alarm */
#define SIGWINCH 28     /* window size changes */
#define SIGUSR1 30      /* user defined signal 1 */
#define SIGUSR2 31      /* user defined signal 2 */

#define SIG_ERR         -1
#define SIG_DFL         0
#define SIG_IGN         1
#define BADSIG          SIG_ERR

#define SA_ONSTACK      0x0001  /* take signal on signal stack */
#define SA_RESTART      0x0002  /* restart system on signal return */
#define SA_DISABLE      0x0004  /* disable taking signals on alternate stack */
#define SA_NOCLDSTOP    0x0008  /* do not generate SIGCHLD on child stop */

/*
 * Flags for sigprocmask:
 */
#define SIG_BLOCK       1       /* block specified signal set */
#define SIG_UNBLOCK     2       /* unblock specified signal set */
#define SIG_SETMASK     3       /* set specified signal set */

#define MINSIGSTKSZ     128                     /* minimum allowable stack */
#define SIGSTKSZ        (MINSIGSTKSZ + 384)     /* recommended stack size */

#define SV_ONSTACK      SA_ONSTACK      /* take signal on signal stack */
#define SV_INTERRUPT    SA_RESTART      /* same bit, opposite sense */

/*
 * Macro for converting signal number to a mask suitable for
 * sigblock().
 */
#define sigmask(m)              (1L << ((m)-1))
#define sigaddset(set, signo)   (*(set) |= 1L << ((signo) - 1), 0)
#define sigdelset(set, signo)   (*(set) &= ~(1L << ((signo) - 1)), 0)
#define sigemptyset(set)        (*(set) = (sigset_t)0, (int)0)
#define sigfillset(set)         (*(set) = ~(sigset_t)0, (int)0)
#define sigismember(set, signo) ((*(set) & (1L << ((signo) - 1))) != 0)

#endif /* NSIG */
